Pectobacterium carotovorum subsp. carotovorum can cause potato blackleg in temperate climates

  • Eisse G. de Haan
  • Toos C. E. M. Dekker-Nooren
  • Gé W. van den Bovenkamp
  • Arjen G. C. L. Speksnijder
  • Patricia S. van der Zouwen
  • Jan M. van der Wolf


It is well established that the pectinolytic bacteria Pectobacterium atrosepticum (Pca) and Dickeya spp. are causal organisms of blackleg in potato. In temperate climates, the role of Pectobacterium carotovorum subsp. carotovorum (Pcc) in potato blackleg, however, is unclear. In different western and central European countries plants are frequently found with blackleg from which only Pcc can be isolated, but not Pca or Dickeya spp. Nevertheless, tubers vacuum-infiltrated with Pcc strains have so far never yielded blackleg-diseased plants in field experiments in temperate climates. In this study, it is shown that potato tubers, vacuum-infiltrated with a subgroup of Pcc strains isolated in Europe, and planted in two different soil types, can result in up to 50% blackleg diseased plants.


Erwinia carotovora subsp. carotovora Pathogenicity PCR-amplification Symptom expression Vacuum infiltration 



Pectobacterium atrosepticum


Pectobacterium carotovorum subsp. carotovorum


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Copyright information

© KNPV 2008

Authors and Affiliations

  • Eisse G. de Haan
    • 1
  • Toos C. E. M. Dekker-Nooren
    • 1
  • Gé W. van den Bovenkamp
    • 1
  • Arjen G. C. L. Speksnijder
    • 2
  • Patricia S. van der Zouwen
    • 2
  • Jan M. van der Wolf
    • 2
  1. 1.Dutch General Inspection Service for Agricultural seed and seed potatoes (NAK)EmmeloordThe Netherlands
  2. 2.Plant Research InternationalWageningenThe Netherlands

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